优点：计算简单，导数恒为1（正区间），缓解梯度消失
As McKenzie speaks about his job, it is a stunning Antarctic summer's day, a balmy -15C. The view outside his window is a vast expanse of white as far as the eye can see, smoothed over by an equally vast layer of pure blue.
。关于这个话题，heLLoword翻译官方下载提供了深入分析
// 当前遍历到的nums2元素（保持你的命名风格）
Екатерина Смирная (корреспондент отдела оперативной информации)